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1da177e4 LT |
1 | /* |
2 | * saa7111 - Philips SAA7111A video decoder driver version 0.0.3 | |
3 | * | |
4 | * Copyright (C) 1998 Dave Perks <dperks@ibm.net> | |
5 | * | |
6 | * Slight changes for video timing and attachment output by | |
7 | * Wolfgang Scherr <scherr@net4you.net> | |
8 | * | |
9 | * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net> | |
10 | * - moved over to linux>=2.4.x i2c protocol (1/1/2003) | |
11 | * | |
12 | * Changes by Michael Hunold <michael@mihu.de> | |
13 | * - implemented DECODER_SET_GPIO, DECODER_INIT, DECODER_SET_VBI_BYPASS | |
14 | * | |
15 | * This program is free software; you can redistribute it and/or modify | |
16 | * it under the terms of the GNU General Public License as published by | |
17 | * the Free Software Foundation; either version 2 of the License, or | |
18 | * (at your option) any later version. | |
19 | * | |
20 | * This program is distributed in the hope that it will be useful, | |
21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
23 | * GNU General Public License for more details. | |
24 | * | |
25 | * You should have received a copy of the GNU General Public License | |
26 | * along with this program; if not, write to the Free Software | |
27 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
28 | */ | |
29 | ||
30 | #include <linux/module.h> | |
31 | #include <linux/init.h> | |
32 | #include <linux/delay.h> | |
33 | #include <linux/errno.h> | |
34 | #include <linux/fs.h> | |
35 | #include <linux/kernel.h> | |
36 | #include <linux/major.h> | |
37 | #include <linux/slab.h> | |
38 | #include <linux/mm.h> | |
39 | #include <linux/pci.h> | |
40 | #include <linux/signal.h> | |
41 | #include <asm/io.h> | |
42 | #include <asm/pgtable.h> | |
43 | #include <asm/page.h> | |
44 | #include <linux/sched.h> | |
1da177e4 LT |
45 | #include <linux/types.h> |
46 | ||
47 | #include <linux/videodev.h> | |
48 | #include <asm/uaccess.h> | |
49 | ||
50 | MODULE_DESCRIPTION("Philips SAA7111 video decoder driver"); | |
51 | MODULE_AUTHOR("Dave Perks"); | |
52 | MODULE_LICENSE("GPL"); | |
53 | ||
54 | #include <linux/i2c.h> | |
55 | #include <linux/i2c-dev.h> | |
56 | ||
57 | #define I2C_NAME(s) (s)->name | |
58 | ||
59 | #include <linux/video_decoder.h> | |
60 | ||
61 | static int debug = 0; | |
62 | module_param(debug, int, 0644); | |
63 | MODULE_PARM_DESC(debug, "Debug level (0-1)"); | |
64 | ||
65 | #define dprintk(num, format, args...) \ | |
66 | do { \ | |
67 | if (debug >= num) \ | |
68 | printk(format, ##args); \ | |
69 | } while (0) | |
70 | ||
71 | /* ----------------------------------------------------------------------- */ | |
72 | ||
73 | struct saa7111 { | |
74 | unsigned char reg[32]; | |
75 | ||
76 | int norm; | |
77 | int input; | |
78 | int enable; | |
79 | int bright; | |
80 | int contrast; | |
81 | int hue; | |
82 | int sat; | |
83 | }; | |
84 | ||
85 | #define I2C_SAA7111 0x48 | |
86 | ||
87 | /* ----------------------------------------------------------------------- */ | |
88 | ||
89 | static inline int | |
90 | saa7111_write (struct i2c_client *client, | |
91 | u8 reg, | |
92 | u8 value) | |
93 | { | |
94 | struct saa7111 *decoder = i2c_get_clientdata(client); | |
95 | ||
96 | decoder->reg[reg] = value; | |
97 | return i2c_smbus_write_byte_data(client, reg, value); | |
98 | } | |
99 | ||
100 | static int | |
101 | saa7111_write_block (struct i2c_client *client, | |
102 | const u8 *data, | |
103 | unsigned int len) | |
104 | { | |
105 | int ret = -1; | |
106 | u8 reg; | |
107 | ||
108 | /* the saa7111 has an autoincrement function, use it if | |
109 | * the adapter understands raw I2C */ | |
110 | if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { | |
111 | /* do raw I2C, not smbus compatible */ | |
112 | struct saa7111 *decoder = i2c_get_clientdata(client); | |
113 | struct i2c_msg msg; | |
114 | u8 block_data[32]; | |
115 | ||
116 | msg.addr = client->addr; | |
117 | msg.flags = 0; | |
118 | while (len >= 2) { | |
119 | msg.buf = (char *) block_data; | |
120 | msg.len = 0; | |
121 | block_data[msg.len++] = reg = data[0]; | |
122 | do { | |
123 | block_data[msg.len++] = | |
124 | decoder->reg[reg++] = data[1]; | |
125 | len -= 2; | |
126 | data += 2; | |
127 | } while (len >= 2 && data[0] == reg && | |
128 | msg.len < 32); | |
129 | if ((ret = i2c_transfer(client->adapter, | |
130 | &msg, 1)) < 0) | |
131 | break; | |
132 | } | |
133 | } else { | |
134 | /* do some slow I2C emulation kind of thing */ | |
135 | while (len >= 2) { | |
136 | reg = *data++; | |
137 | if ((ret = saa7111_write(client, reg, | |
138 | *data++)) < 0) | |
139 | break; | |
140 | len -= 2; | |
141 | } | |
142 | } | |
143 | ||
144 | return ret; | |
145 | } | |
146 | ||
147 | static int | |
148 | saa7111_init_decoder (struct i2c_client *client, | |
149 | struct video_decoder_init *init) | |
150 | { | |
151 | return saa7111_write_block(client, init->data, init->len); | |
152 | } | |
153 | ||
154 | static inline int | |
155 | saa7111_read (struct i2c_client *client, | |
156 | u8 reg) | |
157 | { | |
158 | return i2c_smbus_read_byte_data(client, reg); | |
159 | } | |
160 | ||
161 | /* ----------------------------------------------------------------------- */ | |
162 | ||
163 | static const unsigned char saa7111_i2c_init[] = { | |
164 | 0x00, 0x00, /* 00 - ID byte */ | |
165 | 0x01, 0x00, /* 01 - reserved */ | |
166 | ||
167 | /*front end */ | |
168 | 0x02, 0xd0, /* 02 - FUSE=3, GUDL=2, MODE=0 */ | |
169 | 0x03, 0x23, /* 03 - HLNRS=0, VBSL=1, WPOFF=0, | |
170 | * HOLDG=0, GAFIX=0, GAI1=256, GAI2=256 */ | |
171 | 0x04, 0x00, /* 04 - GAI1=256 */ | |
172 | 0x05, 0x00, /* 05 - GAI2=256 */ | |
173 | ||
174 | /* decoder */ | |
175 | 0x06, 0xf3, /* 06 - HSB at 13(50Hz) / 17(60Hz) | |
176 | * pixels after end of last line */ | |
177 | /*0x07, 0x13, * 07 - HSS at 113(50Hz) / 117(60Hz) pixels | |
178 | * after end of last line */ | |
179 | 0x07, 0xe8, /* 07 - HSS seems to be needed to | |
180 | * work with NTSC, too */ | |
181 | 0x08, 0xc8, /* 08 - AUFD=1, FSEL=1, EXFIL=0, | |
182 | * VTRC=1, HPLL=0, VNOI=0 */ | |
183 | 0x09, 0x01, /* 09 - BYPS=0, PREF=0, BPSS=0, | |
184 | * VBLB=0, UPTCV=0, APER=1 */ | |
185 | 0x0a, 0x80, /* 0a - BRIG=128 */ | |
186 | 0x0b, 0x47, /* 0b - CONT=1.109 */ | |
187 | 0x0c, 0x40, /* 0c - SATN=1.0 */ | |
188 | 0x0d, 0x00, /* 0d - HUE=0 */ | |
189 | 0x0e, 0x01, /* 0e - CDTO=0, CSTD=0, DCCF=0, | |
190 | * FCTC=0, CHBW=1 */ | |
191 | 0x0f, 0x00, /* 0f - reserved */ | |
192 | 0x10, 0x48, /* 10 - OFTS=1, HDEL=0, VRLN=1, YDEL=0 */ | |
193 | 0x11, 0x1c, /* 11 - GPSW=0, CM99=0, FECO=0, COMPO=1, | |
194 | * OEYC=1, OEHV=1, VIPB=0, COLO=0 */ | |
195 | 0x12, 0x00, /* 12 - output control 2 */ | |
196 | 0x13, 0x00, /* 13 - output control 3 */ | |
197 | 0x14, 0x00, /* 14 - reserved */ | |
198 | 0x15, 0x00, /* 15 - VBI */ | |
199 | 0x16, 0x00, /* 16 - VBI */ | |
200 | 0x17, 0x00, /* 17 - VBI */ | |
201 | }; | |
202 | ||
203 | static int | |
204 | saa7111_command (struct i2c_client *client, | |
205 | unsigned int cmd, | |
206 | void *arg) | |
207 | { | |
208 | struct saa7111 *decoder = i2c_get_clientdata(client); | |
209 | ||
210 | switch (cmd) { | |
211 | ||
212 | case 0: | |
213 | case DECODER_INIT: | |
214 | { | |
215 | struct video_decoder_init *init = arg; | |
216 | if (NULL != init) | |
217 | return saa7111_init_decoder(client, init); | |
218 | else { | |
219 | struct video_decoder_init vdi; | |
220 | vdi.data = saa7111_i2c_init; | |
221 | vdi.len = sizeof(saa7111_i2c_init); | |
222 | return saa7111_init_decoder(client, &vdi); | |
223 | } | |
224 | } | |
225 | ||
226 | case DECODER_DUMP: | |
227 | { | |
228 | int i; | |
229 | ||
230 | for (i = 0; i < 32; i += 16) { | |
231 | int j; | |
232 | ||
233 | printk(KERN_DEBUG "%s: %03x", I2C_NAME(client), i); | |
234 | for (j = 0; j < 16; ++j) { | |
235 | printk(" %02x", | |
236 | saa7111_read(client, i + j)); | |
237 | } | |
238 | printk("\n"); | |
239 | } | |
240 | } | |
241 | break; | |
242 | ||
243 | case DECODER_GET_CAPABILITIES: | |
244 | { | |
245 | struct video_decoder_capability *cap = arg; | |
246 | ||
247 | cap->flags = VIDEO_DECODER_PAL | | |
248 | VIDEO_DECODER_NTSC | | |
249 | VIDEO_DECODER_SECAM | | |
250 | VIDEO_DECODER_AUTO | | |
251 | VIDEO_DECODER_CCIR; | |
252 | cap->inputs = 8; | |
253 | cap->outputs = 1; | |
254 | } | |
255 | break; | |
256 | ||
257 | case DECODER_GET_STATUS: | |
258 | { | |
259 | int *iarg = arg; | |
260 | int status; | |
261 | int res; | |
262 | ||
263 | status = saa7111_read(client, 0x1f); | |
264 | dprintk(1, KERN_DEBUG "%s status: 0x%02x\n", I2C_NAME(client), | |
265 | status); | |
266 | res = 0; | |
267 | if ((status & (1 << 6)) == 0) { | |
268 | res |= DECODER_STATUS_GOOD; | |
269 | } | |
270 | switch (decoder->norm) { | |
271 | case VIDEO_MODE_NTSC: | |
272 | res |= DECODER_STATUS_NTSC; | |
273 | break; | |
274 | case VIDEO_MODE_PAL: | |
275 | res |= DECODER_STATUS_PAL; | |
276 | break; | |
277 | case VIDEO_MODE_SECAM: | |
278 | res |= DECODER_STATUS_SECAM; | |
279 | break; | |
280 | default: | |
281 | case VIDEO_MODE_AUTO: | |
282 | if ((status & (1 << 5)) != 0) { | |
283 | res |= DECODER_STATUS_NTSC; | |
284 | } else { | |
285 | res |= DECODER_STATUS_PAL; | |
286 | } | |
287 | break; | |
288 | } | |
289 | if ((status & (1 << 0)) != 0) { | |
290 | res |= DECODER_STATUS_COLOR; | |
291 | } | |
292 | *iarg = res; | |
293 | } | |
294 | break; | |
295 | ||
296 | case DECODER_SET_GPIO: | |
297 | { | |
298 | int *iarg = arg; | |
299 | if (0 != *iarg) { | |
300 | saa7111_write(client, 0x11, | |
301 | (decoder->reg[0x11] | 0x80)); | |
302 | } else { | |
303 | saa7111_write(client, 0x11, | |
304 | (decoder->reg[0x11] & 0x7f)); | |
305 | } | |
306 | break; | |
307 | } | |
308 | ||
309 | case DECODER_SET_VBI_BYPASS: | |
310 | { | |
311 | int *iarg = arg; | |
312 | if (0 != *iarg) { | |
313 | saa7111_write(client, 0x13, | |
314 | (decoder->reg[0x13] & 0xf0) | 0x0a); | |
315 | } else { | |
316 | saa7111_write(client, 0x13, | |
317 | (decoder->reg[0x13] & 0xf0)); | |
318 | } | |
319 | break; | |
320 | } | |
321 | ||
322 | case DECODER_SET_NORM: | |
323 | { | |
324 | int *iarg = arg; | |
325 | ||
326 | switch (*iarg) { | |
327 | ||
328 | case VIDEO_MODE_NTSC: | |
329 | saa7111_write(client, 0x08, | |
330 | (decoder->reg[0x08] & 0x3f) | 0x40); | |
331 | saa7111_write(client, 0x0e, | |
332 | (decoder->reg[0x0e] & 0x8f)); | |
333 | break; | |
334 | ||
335 | case VIDEO_MODE_PAL: | |
336 | saa7111_write(client, 0x08, | |
337 | (decoder->reg[0x08] & 0x3f) | 0x00); | |
338 | saa7111_write(client, 0x0e, | |
339 | (decoder->reg[0x0e] & 0x8f)); | |
340 | break; | |
341 | ||
342 | case VIDEO_MODE_SECAM: | |
343 | saa7111_write(client, 0x08, | |
344 | (decoder->reg[0x08] & 0x3f) | 0x00); | |
345 | saa7111_write(client, 0x0e, | |
346 | (decoder->reg[0x0e] & 0x8f) | 0x50); | |
347 | break; | |
348 | ||
349 | case VIDEO_MODE_AUTO: | |
350 | saa7111_write(client, 0x08, | |
351 | (decoder->reg[0x08] & 0x3f) | 0x80); | |
352 | saa7111_write(client, 0x0e, | |
353 | (decoder->reg[0x0e] & 0x8f)); | |
354 | break; | |
355 | ||
356 | default: | |
357 | return -EINVAL; | |
358 | ||
359 | } | |
360 | decoder->norm = *iarg; | |
361 | } | |
362 | break; | |
363 | ||
364 | case DECODER_SET_INPUT: | |
365 | { | |
366 | int *iarg = arg; | |
367 | ||
368 | if (*iarg < 0 || *iarg > 7) { | |
369 | return -EINVAL; | |
370 | } | |
371 | ||
372 | if (decoder->input != *iarg) { | |
373 | decoder->input = *iarg; | |
374 | /* select mode */ | |
375 | saa7111_write(client, 0x02, | |
376 | (decoder-> | |
377 | reg[0x02] & 0xf8) | decoder->input); | |
378 | /* bypass chrominance trap for modes 4..7 */ | |
379 | saa7111_write(client, 0x09, | |
380 | (decoder-> | |
381 | reg[0x09] & 0x7f) | ((decoder-> | |
382 | input > | |
383 | 3) ? 0x80 : | |
384 | 0)); | |
385 | } | |
386 | } | |
387 | break; | |
388 | ||
389 | case DECODER_SET_OUTPUT: | |
390 | { | |
391 | int *iarg = arg; | |
392 | ||
393 | /* not much choice of outputs */ | |
394 | if (*iarg != 0) { | |
395 | return -EINVAL; | |
396 | } | |
397 | } | |
398 | break; | |
399 | ||
400 | case DECODER_ENABLE_OUTPUT: | |
401 | { | |
402 | int *iarg = arg; | |
403 | int enable = (*iarg != 0); | |
404 | ||
405 | if (decoder->enable != enable) { | |
406 | decoder->enable = enable; | |
407 | ||
408 | /* RJ: If output should be disabled (for | |
409 | * playing videos), we also need a open PLL. | |
410 | * The input is set to 0 (where no input | |
411 | * source is connected), although this | |
412 | * is not necessary. | |
413 | * | |
414 | * If output should be enabled, we have to | |
415 | * reverse the above. | |
416 | */ | |
417 | ||
418 | if (decoder->enable) { | |
419 | saa7111_write(client, 0x02, | |
420 | (decoder-> | |
421 | reg[0x02] & 0xf8) | | |
422 | decoder->input); | |
423 | saa7111_write(client, 0x08, | |
424 | (decoder->reg[0x08] & 0xfb)); | |
425 | saa7111_write(client, 0x11, | |
426 | (decoder-> | |
427 | reg[0x11] & 0xf3) | 0x0c); | |
428 | } else { | |
429 | saa7111_write(client, 0x02, | |
430 | (decoder->reg[0x02] & 0xf8)); | |
431 | saa7111_write(client, 0x08, | |
432 | (decoder-> | |
433 | reg[0x08] & 0xfb) | 0x04); | |
434 | saa7111_write(client, 0x11, | |
435 | (decoder->reg[0x11] & 0xf3)); | |
436 | } | |
437 | } | |
438 | } | |
439 | break; | |
440 | ||
441 | case DECODER_SET_PICTURE: | |
442 | { | |
443 | struct video_picture *pic = arg; | |
444 | ||
445 | if (decoder->bright != pic->brightness) { | |
446 | /* We want 0 to 255 we get 0-65535 */ | |
447 | decoder->bright = pic->brightness; | |
448 | saa7111_write(client, 0x0a, decoder->bright >> 8); | |
449 | } | |
450 | if (decoder->contrast != pic->contrast) { | |
451 | /* We want 0 to 127 we get 0-65535 */ | |
452 | decoder->contrast = pic->contrast; | |
453 | saa7111_write(client, 0x0b, | |
454 | decoder->contrast >> 9); | |
455 | } | |
456 | if (decoder->sat != pic->colour) { | |
457 | /* We want 0 to 127 we get 0-65535 */ | |
458 | decoder->sat = pic->colour; | |
459 | saa7111_write(client, 0x0c, decoder->sat >> 9); | |
460 | } | |
461 | if (decoder->hue != pic->hue) { | |
462 | /* We want -128 to 127 we get 0-65535 */ | |
463 | decoder->hue = pic->hue; | |
464 | saa7111_write(client, 0x0d, | |
465 | (decoder->hue - 32768) >> 8); | |
466 | } | |
467 | } | |
468 | break; | |
469 | ||
470 | default: | |
471 | return -EINVAL; | |
472 | } | |
473 | ||
474 | return 0; | |
475 | } | |
476 | ||
477 | /* ----------------------------------------------------------------------- */ | |
478 | ||
479 | /* | |
480 | * Generic i2c probe | |
481 | * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' | |
482 | */ | |
483 | static unsigned short normal_i2c[] = { I2C_SAA7111 >> 1, I2C_CLIENT_END }; | |
1da177e4 | 484 | |
68cc9d0b | 485 | static unsigned short ignore = I2C_CLIENT_END; |
1da177e4 LT |
486 | |
487 | static struct i2c_client_address_data addr_data = { | |
488 | .normal_i2c = normal_i2c, | |
68cc9d0b JD |
489 | .probe = &ignore, |
490 | .ignore = &ignore, | |
1da177e4 LT |
491 | }; |
492 | ||
493 | static struct i2c_driver i2c_driver_saa7111; | |
494 | ||
495 | static int | |
496 | saa7111_detect_client (struct i2c_adapter *adapter, | |
497 | int address, | |
498 | int kind) | |
499 | { | |
500 | int i; | |
501 | struct i2c_client *client; | |
502 | struct saa7111 *decoder; | |
503 | struct video_decoder_init vdi; | |
504 | ||
505 | dprintk(1, | |
506 | KERN_INFO | |
507 | "saa7111.c: detecting saa7111 client on address 0x%x\n", | |
508 | address << 1); | |
509 | ||
510 | /* Check if the adapter supports the needed features */ | |
511 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
512 | return 0; | |
513 | ||
514 | client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL); | |
515 | if (client == 0) | |
516 | return -ENOMEM; | |
517 | memset(client, 0, sizeof(struct i2c_client)); | |
518 | client->addr = address; | |
519 | client->adapter = adapter; | |
520 | client->driver = &i2c_driver_saa7111; | |
1da177e4 LT |
521 | strlcpy(I2C_NAME(client), "saa7111", sizeof(I2C_NAME(client))); |
522 | ||
523 | decoder = kmalloc(sizeof(struct saa7111), GFP_KERNEL); | |
524 | if (decoder == NULL) { | |
525 | kfree(client); | |
526 | return -ENOMEM; | |
527 | } | |
528 | memset(decoder, 0, sizeof(struct saa7111)); | |
529 | decoder->norm = VIDEO_MODE_NTSC; | |
530 | decoder->input = 0; | |
531 | decoder->enable = 1; | |
532 | decoder->bright = 32768; | |
533 | decoder->contrast = 32768; | |
534 | decoder->hue = 32768; | |
535 | decoder->sat = 32768; | |
536 | i2c_set_clientdata(client, decoder); | |
537 | ||
538 | i = i2c_attach_client(client); | |
539 | if (i) { | |
540 | kfree(client); | |
541 | kfree(decoder); | |
542 | return i; | |
543 | } | |
544 | ||
545 | vdi.data = saa7111_i2c_init; | |
546 | vdi.len = sizeof(saa7111_i2c_init); | |
547 | i = saa7111_init_decoder(client, &vdi); | |
548 | if (i < 0) { | |
549 | dprintk(1, KERN_ERR "%s_attach error: init status %d\n", | |
550 | I2C_NAME(client), i); | |
551 | } else { | |
552 | dprintk(1, | |
553 | KERN_INFO | |
554 | "%s_attach: chip version %x at address 0x%x\n", | |
555 | I2C_NAME(client), saa7111_read(client, 0x00) >> 4, | |
556 | client->addr << 1); | |
557 | } | |
558 | ||
559 | return 0; | |
560 | } | |
561 | ||
562 | static int | |
563 | saa7111_attach_adapter (struct i2c_adapter *adapter) | |
564 | { | |
565 | dprintk(1, | |
566 | KERN_INFO | |
567 | "saa7111.c: starting probe for adapter %s (0x%x)\n", | |
568 | I2C_NAME(adapter), adapter->id); | |
569 | return i2c_probe(adapter, &addr_data, &saa7111_detect_client); | |
570 | } | |
571 | ||
572 | static int | |
573 | saa7111_detach_client (struct i2c_client *client) | |
574 | { | |
575 | struct saa7111 *decoder = i2c_get_clientdata(client); | |
576 | int err; | |
577 | ||
578 | err = i2c_detach_client(client); | |
579 | if (err) { | |
580 | return err; | |
581 | } | |
582 | ||
583 | kfree(decoder); | |
584 | kfree(client); | |
585 | ||
586 | return 0; | |
587 | } | |
588 | ||
589 | /* ----------------------------------------------------------------------- */ | |
590 | ||
591 | static struct i2c_driver i2c_driver_saa7111 = { | |
592 | .owner = THIS_MODULE, | |
593 | .name = "saa7111", | |
594 | ||
595 | .id = I2C_DRIVERID_SAA7111A, | |
1da177e4 LT |
596 | |
597 | .attach_adapter = saa7111_attach_adapter, | |
598 | .detach_client = saa7111_detach_client, | |
599 | .command = saa7111_command, | |
600 | }; | |
601 | ||
602 | static int __init | |
603 | saa7111_init (void) | |
604 | { | |
605 | return i2c_add_driver(&i2c_driver_saa7111); | |
606 | } | |
607 | ||
608 | static void __exit | |
609 | saa7111_exit (void) | |
610 | { | |
611 | i2c_del_driver(&i2c_driver_saa7111); | |
612 | } | |
613 | ||
614 | module_init(saa7111_init); | |
615 | module_exit(saa7111_exit); |